Seems so silly that they won't support `effortLevel: "max"` while a env var is perfectly fine.
replyThey do now. /effort command is on the latest Claude Code version; run `claude update` and `claude /effort`.
replySubagents are very useful. But sometimes it uses sonnet or haiku.
replyYou can try something like "always use opus for subagents" if you want better subagents.